<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
    // 利用递归求100的阶乘
    //   100 * 99 * 98 * 97 * … * 1 = ?
    function jc (num){
        if(num==1){
            return 1;
        }
        return num * jc(num-1);
    }
    var res = jc(100);
    console.log(res);




    </script>
</body>
</html>